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Roellke E, Fonacier L, Banta E. Methylisothiazolinone-containing paint contributing to mucocutaneous and cutaneous symptoms: A case of aerosolized allergic contact dermatitis. Ann Allergy Asthma Immunol 2024:S1081-1206(24)00282-5. [PMID: 38705271 DOI: 10.1016/j.anai.2024.04.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 04/22/2024] [Accepted: 04/29/2024] [Indexed: 05/07/2024]
Affiliation(s)
- Emma Roellke
- Department of Internal Medicine, New York University Grossman Long Island School of Medicine, Mineola, New York
| | - Luz Fonacier
- Division of Rheumatology, Allergy, and Immunology, New York University Grossman Long Island School of Medicine, Garden City, New York
| | - Erin Banta
- Division of Rheumatology, Allergy, and Immunology, New York University Grossman Long Island School of Medicine, Garden City, New York.
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Electrochemical Characterization and Voltammetric Determination of Methylisothiazolinone on a Boron-Doped Diamond Electrode. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27249013. [PMID: 36558143 PMCID: PMC9782135 DOI: 10.3390/molecules27249013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/09/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022]
Abstract
The electrochemical properties of methylisothiazolinone (MIT), the most widely used preservative, were investigated by cyclic (CV) and differential pulse voltammetry (DPV) to develop a new method for its determination. To our knowledge, this is the first demonstration of a voltammetric procedure for the determination of MIT on a boron-doped diamond electrode (BDDE) in a citrate-phosphate buffer (C-PB) environment. The anodic oxidation process of methylisothiazolinone, which is the basis of this method, proved to be diffusion-controlled and proceeded with an irreversible two-electron exchange. The radical cations, as unstable primary products, were converted in subsequent chemical reactions to sulfoxides and sulfones, and finally to more stable final products. Performed determinations were based on the DPV technique. A linear calibration curve was obtained in the concentration range from 0.7 to 18.7 mg L-1, with a correlation coefficient of 0.9999. The proposed procedure was accurate and precise, allowing the detection of MIT at a concentration level of 0.24 mg L-1. It successfully demonstrated its suitability for the determination of methylisothiazolinone in household products without the need for any separation steps. The proposed method can serve as an alternative to the prevailing chromatographic determinations of MIT in real samples.
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Burnett CL, Bergfeld WF, Belsito DV, Klaassen CD, Liebler DC, Marks JG, Peterson LA, Shank RC, Slaga TJ, Snyder PW, Heldreth B. Amended Safety Assessment of Methylchloroisothiazolinone and Methylisothiazolinone as Used in Cosmetics. Int J Toxicol 2021; 40:20S-33S. [PMID: 34259066 DOI: 10.1177/10915818211016382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The Expert Panel for Cosmetic Ingredient Safety (Panel) reassessed the safety of the mixture Methylchloroisothiazolinone (MCI)/Methylisothiazolinone (MI), which functions as a preservative in cosmetic products. The Panel reviewed relevant animal and human data provided in this safety assessment, and data from the previously published safety assessment of this mixture, and concluded that MCI/MI is safe in cosmetics when formulated to be nonsensitizing, based on the results of a quantitative risk assessment or similar methodology; however, at no point should concentrations exceed 7.5 ppm in leave-on products or 15 ppm in rinse-off products.
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Affiliation(s)
| | | | | | | | | | - James G Marks
- Expert Panel for Cosmetic Ingredient Safety Former Member
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Lee EB, Lobl M, Ford A, DeLeo V, Adler BL, Wysong A. What Is New in Occupational Allergic Contact Dermatitis in the Year of the COVID Pandemic? Curr Allergy Asthma Rep 2021; 21:26. [PMID: 33779825 PMCID: PMC8006117 DOI: 10.1007/s11882-021-01000-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2021] [Indexed: 12/17/2022]
Abstract
Purpose of Review This article aims to summarize some recent trends in occupational allergic contact dermatitis (ACD), including dermatitis related to pandemic-level personal protective equipment in healthcare workers, hazards patients may experience when working from home, and occupational perspectives on the recent American Contact Dermatitis Society (ACDS) allergens of the year and ACDS Core Allergen Series updates. Recent Findings Recent ACDS Allergens of the Year may be particularly relevant to healthcare workers, including isobornyl acrylate, which is present in glucose sensors and propylene glycol present in hand cleansers and disinfectants. Lavender, limonene, and linalool, all of which are new additions to the ACDS Core Allergen Series, have been reported as causes for occupational ACD in massage therapists and aromatherapists. Isothiazolinone allergy continues to rise in both consumer and occupational settings. Finally, the COVID-19 pandemic has resulted in a wave of occupational ACD in healthcare workers to personal protective equipment, and revealed new potential allergens for individuals working from home. Summary Occupational allergic contact dermatitis continues to exert a significant occupational disease burden. Remaining aware of the current trends in allergens may allow for earlier recognition, diagnosis, and treatment, subsequently helping our patients to work in healthier and safer environments.
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Affiliation(s)
- Erica B Lee
- Department of Dermatology, University of Nebraska Medical Center, 985645 Nebraska Medical Center, Omaha, NE, 68198-5645, USA
| | - Marissa Lobl
- Department of Dermatology, University of Nebraska Medical Center, 985645 Nebraska Medical Center, Omaha, NE, 68198-5645, USA
| | - Aubree Ford
- Department of Dermatology, University of Nebraska Medical Center, 985645 Nebraska Medical Center, Omaha, NE, 68198-5645, USA
| | - Vincent DeLeo
- Department of Dermatology, Keck School of Medicine of University of Southern California, Los Angeles, CA, USA
| | - Brandon L Adler
- Department of Dermatology, Keck School of Medicine of University of Southern California, Los Angeles, CA, USA
| | - Ashley Wysong
- Department of Dermatology, University of Nebraska Medical Center, 985645 Nebraska Medical Center, Omaha, NE, 68198-5645, USA.
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Isothiazolinone Biocides: Chemistry, Biological, and Toxicity Profiles. Molecules 2020; 25:molecules25040991. [PMID: 32102175 PMCID: PMC7070760 DOI: 10.3390/molecules25040991] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 02/09/2020] [Accepted: 02/20/2020] [Indexed: 01/20/2023] Open
Abstract
The importance of isothiazole and of compounds containing the isothiazole nucleus has been growing over the last few years. Isothiazolinones are used in cosmetic and as chemical additives for occupational and industrial usage due to their bacteriostatic and fungiostatic activity. Despite their effectiveness as biocides, isothiazolinones are strong sensitizers, producing skin irritations and allergies and may pose ecotoxicological hazards. Therefore, their use is restricted by EU legislation. Considering the relevance and importance of isothiazolinone biocides, the present review describes the state-of-the-art knowledge regarding their synthesis, antibacterial components, toxicity (including structure–activity–toxicity relationships) outlines, and (photo)chemical stability. Due to the increasing prevalence and impact of isothiazolinones in consumer’s health, analytical methods for the identification and determination of this type of biocides were also discussed.
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Uter W, Aalto-Korte K, Agner T, Andersen KE, Bircher AJ, Brans R, Bruze M, Diepgen TL, Foti C, Giménez Arnau A, Gonçalo M, Goossens A, McFadden J, Paulsen E, Svedman C, Rustemeyer T, White IR, Wilkinson M, Johansen JD. The epidemic of methylisothiazolinone contact allergy in Europe: follow-up on changing exposures. J Eur Acad Dermatol Venereol 2019; 34:333-339. [PMID: 31419348 DOI: 10.1111/jdv.15875] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 07/19/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND Methylisothiazolinone (MI) has caused an unprecedented epidemic of contact allergy in Europe and elsewhere. Subsequently, regulatory action has been taken, at least in Europe, aiming at reducing risk of MI sensitization. OBJECTIVE To follow-up on the prevalence of contact allergy to MI in consecutively patch tested patients and assess the spectrum of products containing MI or methylchloroisothiazolinone (MCI)/MI in patients positive to MI which elicited current allergic contact dermatitis. METHODS A cross-sectional survey was performed in 2016 and 2017, including all adult patients patch tested with the baseline series (including MI 0.2% aq.) between 1 May and 31 October at 14 centres in 11 European countries. Patients with positive reactions (+ to +++) to MI were further examined regarding history, clinical characteristics and eliciting products, which were categorized into 34 types and 4 classes (leave-on, rinse-off, household, occupational). The results were compared with the reference year 2015. RESULTS A total of 317 patients, n = 202 of 4278 tested in 2016 (4.72%) and n = 115 of 3879 tested in 2017 (2.96%), had positive reactions to MI; the previous result from 2015 was 5.97% (P < 0.0001). The share of currently relevant contact allergy among all positive reactions declined significantly as well (P = 0.0032). Concerning product classes, a relative decline of leave-on and a relative increase of rinse-off and household products was noted. CONCLUSION The prevalence of MI contact allergy decreased by 50% from 2015 to 2017. As a consequence of regulation, the share of cosmetics products (leave-on in particular) eliciting allergic contact dermatitis is decreasing. The chosen method of analysing causative products in sensitized patients has proven useful to monitor effects of intervention.
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Affiliation(s)
- W Uter
- Department of Medical Informatics, Biometry and Epidemiology, University of Erlangen/Nürnberg, Erlangen, Germany
| | - K Aalto-Korte
- Occupational Medicine, Finnish Institute of Occupational Health, Helsinki, Finland
| | - T Agner
- Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - K E Andersen
- Department of Dermatology and Allergy Centre, Odense University Hospital, University of Southern Denmark, Odense, Denmark
| | - A J Bircher
- Department of Dermatology, University Hospital Basel, Basel, Switzerland
| | - R Brans
- Institute for Interdisciplinary Dermatological Prevention and Rehabilitation (iDerm) at the University of Osnabrück, Osnabrück, Germany
| | - M Bruze
- Department of Occupational and Environmental Dermatology, Skåne University Hospital, Lund University, Malmö, Sweden
| | - T L Diepgen
- Department of Social Medicine, Occupational and Environmental Dermatology, University of Heidelberg, Heidelberg, Germany
| | - C Foti
- Unit of Dermatology, Department of Biomedical Science and Human Oncology, University of Bari, Bari, Italy
| | - A Giménez Arnau
- Department of Dermatology, Hospital del Mar, IMIM, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - M Gonçalo
- Department of Dermatology, University Hospital and Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - A Goossens
- Contact Allergy Unit, Department of Dermatology, University Hospital KU Leuven, Leuven, Belgium
| | - J McFadden
- Guy's Hospital, St John's Institute of Dermatology, London, UK
| | - E Paulsen
- Department of Dermatology and Allergy Centre, Odense University Hospital, University of Southern Denmark, Odense, Denmark
| | - C Svedman
- Department of Occupational and Environmental Dermatology, Skåne University Hospital, Lund University, Malmö, Sweden
| | - T Rustemeyer
- Department of Dermatology, Amsterdam University Medical Centres, Amsterdam, The Netherlands
| | - I R White
- Guy's Hospital, St John's Institute of Dermatology, London, UK
| | - M Wilkinson
- Department of Dermatology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - J D Johansen
- Department of Dermato-Allergology, National Allergy Research Centre, Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
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Uter W, Werfel T, White IR, Johansen JD. Contact Allergy: A Review of Current Problems from a Clinical Perspective. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:ijerph15061108. [PMID: 29844295 PMCID: PMC6025382 DOI: 10.3390/ijerph15061108] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 05/20/2018] [Accepted: 05/26/2018] [Indexed: 12/17/2022]
Abstract
Contact allergy is common, affecting 27% of the general population in Europe. Original publications, including case reports, published since 2016 (inclusive) were identified with the aim of collating a full review of current problems in the field. To this end, a literature search employing methods of systematic reviewing was performed in the Medline® and Web of Science™ databases on 28 January 2018, using the search terms (“contact sensitization” or “contact allergy”). Of 446 non-duplicate publications identified by above search, 147 were excluded based on scrutiny of title, abstract and key words. Of the remaining 299 examined in full text, 291 were deemed appropriate for inclusion, and main findings were summarised in topic sections. In conclusion, diverse sources of exposures to chemicals of widely-differing types and structures, continue to induce sensitisation in man and may result in allergic contact dermatitis. Many of the chemicals are “evergreen” but others are “newcomers”. Vigilance and proper investigation (patch testing) are required to detect and inform of the presence of these haptens to which our populations remain exposed.
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Affiliation(s)
- Wolfgang Uter
- Department of Medical Informatics, Biometry and Epidemiology, University of Erlangen/Nürnberg, 91054 Erlangen, Germany.
| | - Thomas Werfel
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, 30625 Hannover, Germany.
| | - Ian R White
- St John's Institute of Dermatology, Guy's Hospital, London SE1 9RT, UK.
| | - Jeanne D Johansen
- Department of Dermatology and Allergy, National Allergy Research Centre, Copenhagen University Hospital Herlev and Gentofte, 2900 Hellerup, Denmark.
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